//题目：输入3个数a,b,c，按大小顺序输出。
//1.程序分析：利用指针方法。
//2.程序源代码：
/*pointer*/
#include "stdio.h"
void swap(int *p1, int *p2);
int main() {
	int n1, n2, n3;
	int *pointer1, *pointer2, *pointer3;
	printf("please input 3 number:n1,n2,n3:");
	scanf("%d,%d,%d", &n1, &n2, &n3);
	pointer1 = &n1;
	pointer2 = &n2;
	pointer3 = &n3;
	if (n1 > n2)
		swap(pointer1, pointer2);
	if (n1 > n3)
		swap(pointer1, pointer3);
	if (n2 > n3)
		swap(pointer2, pointer3);
	printf("the sorted numbers are:%d,%d,%d\n", n1, n2, n3);
}
void swap(int *p1, int *p2) {
	int p;
	p = *p1;
	*p1 = *p2;
	*p2 = p;
}
